I think that the revisionist approach to history that we fought WW2 alone and won everybody’s freedom from Fascism and therefore the continent owes us a blood debt isn’t terribly helpful and only serves to illustrate a sense of entitlement that from a third party point of view must be horribly offensive.
So far as I can see, the main loser in any hard Brexit scenario is us – specifically those of us who live in locations that rely upon a cross border supply chain (aerospace, automotive, manufacturing) or who rely on the trading rules of the bloc to standardise and supplement incomes that would otherwise be unviable (employment rights, farming).
In any case, none of the Brexit scenarios on the table (including Remain) specifically address legitimate grievances about affordable housing, wage stagnation, wealth inequality, austerity, quality jobs with long term prospects, erosion of state benefits (pension, working tax credits etc.) that motivated many people to vote Leave in the first instance.